To monitor the current availability status within each tier:

1. Navigate to the Enterprise Summary page and locate the Status by resource type region.
2. These status bar charts show the breakdown of status for each resource type or tier monitored in your enterprise within that resource type.
3. To display only resources for a particular status, click one of the status icons (Up, Down, Not reporting) to display only resources for that status. For example, click Down, as shown in the following graphic.
   
   
   
   

   After you click Down, you'll see the following:

   
   
   
   
   

   To view details on specific resources that are down, click on any of the bar charts.

   
   
   
   
   

Here are some examples of tasks to perform within the resource type you’re investigating:

• Drill down into resources with a status other than Up.

• Identify resources related to those that don’t have an Up status. For example, locate the WebLogic Servers that are down.

• Review the home page for each resource that you determined is having a problem. Look for alarms on the resource. You can also review the status of related resources by looking at the Related Resources page.

Administrators may want to proactively review open alarms on a regular basis.

Here is a typical workflow for investigating alarms from the Enterprise Summary page.

1. On the Enterprise Summary page, locate the Alarms region. This region shows the total count of open alarms, and a breakdown of these alarms by severity.

   
   
   
   
   
2. Click on the total count of alarms (or each count by severity) to display a panel showing a list of these alarms.
   
   
   
   
3. From the Alarms panel, click on any of the alarms to open a new browser tab showing the details about that specific alarm in the OCI Monitoring page.
   
   
   
   

For administrators responsible for various infrastructure tiers, the Enterprise Summary page provides tier regions that allow you to monitor the current performance of all resources within that tier.

The top of the Enterprise Summary page displays rolled-up information that applies to all resources: the total number of resources, the breakdown of resource status and a breakdown of all alarms triggered for all resources. Below this, the graphical interface groups the entities by tiers and rolls-up performance information for each tier.

Navigate to the Enterprise Summary page and locate the performance metrics charts for the tier you are interested in. On the performance charts, look for outliers (points on the charts that look different and are isolated compared to the others). Hover over these points to see the resource name and metric values at that point.

Each data point in the scatterplot chart or each line item in the table represents one resource instance (e.g. one database, one WebLogic Server, etc.) However, if the metric has dimensions, there could be multiple data points for that metric associated with the same resource instance.

In these scenarios, the table below provides details on which metric data point is shown – either these multiple data points across the various dimensions are aggregated or a specific metric data point across dimensions is chosen.

fileystem Name   File System Utilization
     /                    45%
     /u01                 95%
     /tmp                 55%

diskName   ops/sec
 Disk1       150
 Disk2       1000
 Disk3       500

Dynamically troubleshoot performance problems

The metric charts simplify interactive problem identification and analysis:

• Change the time period for the charts by using the "Performance metric period" control on the upper right corner of the UI.

• Click the points on the chart to drill down to the resource homepage for further review of the metric.

• Change the metrics displayed in the scatter chart to review the collective performance of any other two metrics. To vary the metrics displayed on each chart, click on the Edit icon on the upper-right corner of the chart.

An Edit panel displays that allows you to change the metrics.

If you would like to further qualify the metric by specifying the dimension of the metric, use the Advanced option to enable the choice of dimensions for the metric, as shown below.

Click Apply at the bottom of the panel to save your changes. Note that in addition to Apply, there is also a Restore default option which restores the original metric chart.

Switch the performance chart to show, for example, the CPU Utilization % and Memory Utilization % across all monitored hosts. At this point you can:

• Check for outliers in this chart, look for high values of CPU Utilization % and/or Memory Utilization % which could indicate that these hosts are currently under a heavy load.

• Hover your mouse over the data point to find out which specific host is under heavy load.

• Click the data point to examine the trend of these metrics and identify how long the hosts have been under a heavy load. A long trend might indicate issues on the host that need further investigation.

Additional Performance Charts Controls

On the Performance charts, use the scroll wheel on the mouse to zoom in and out while maintaining the same center of the image.

You can hold down your left mouse button to select an area of data to zoom in on. When you release the mouse button, the selected area will pan to the center of the screen and automatically zoom in to fill the entire area of the chart.

The x-axis and y-axis ranges can also slide. Hold down the left mouse button and move left and right on the x-axis, or up and down on the y-axis, until you find the ideal concentration of points for your research.

By default, there are 4 tiers in Enterprise Summary, where each tier containing key performance metrics for that tier:

• E-Business Suite
• WebLogic Server
• Oracle Database
• Host

Based on your environment, you can change one or two of these tiers to focus on specific resources of interest.

For example, you may not be running Oracle E-Business Suite in your environment, hence the charts in the first tier, 'E-Business Suite', will be empty. You can use this tier to show metrics for other resource types of interest.

To do this, expand the tier and click on the Edit icon on the first chart.

This will open up the Edit panel on the right, showing the default settings for the metric chart.

Expand the Chart section at the top, and change the Tier name, Title of the chart, and metrics. In the example below, the Tier is changed to WebLogic Server, the title of the chart is changed to JDBC Connections and the metrics have also been changed accordingly.

After you click Apply at the bottom of the Edit panel, the tier and charts show your changes.

You can continue to change the rest of the charts in the tier.

Additional considerations for customization:

1. Make sure you do NOT launch the browser in incognito mode.
2. Any changes to the charts will be kept for the duration of the session and for the specific browser that is used.
3. If you want to keep the changes across sessions (i.e. across login/logouts of the session), click Save as default located at the bottom left of the page. Your changes will be saved for the browser. If at any time you want to restore the original Enterprise summary chart settings, click Restore default. It will be restored for the specific user's browser.
4. To add a metric extension to a chart, click on the Edit icon on the chart. Then choose the Namespace = oracle_metric_extensions_appmgmt and Resource Type of the resource on which the metric extension has been enabled. Next choose the appropriate metric of your metric extension.

The Resource Home page has all the information that allows the assessment of the overall health of a resource.

Baselines represent the normal performance of a resource that allow you to compare the current performance with previous performance and help you set appropriate thresholds for performance metrics. Baselines are calculated by observing performance metric values over a period of time and applying machine learning algorithms to this data set. By collecting performance metrics over a period of time, Stack Monitoring identifies the normal expected range of values of particular metrics and saves them as baselines. Metric values outside of the normal ranges are identified as anomalous and visually highlighted in performance charts. Baselines will become more fine-tuned over time as the system is used.

To enable baselines on a resource, enable Stack Monitoring Enterprise Edition on that resource from the licensing UI. For newly discovered resources, baselines will become effective after at least two hours after discovery.

Baseline enabled metrics are identified by a +. For multi-dimensional metrics, hover over the line to understand the metric value compared to the baseline range of values, as shown in the image below:

Anomaly detection is enabled on some select metrics for out-of-the-box resource types by default. However, anomaly detection can be enabled on additional metrics and custom resources manually in the UI.